Samsung S3C6400X User Manual page 1148

KEYPAD INTERFACE
KEYPAD INTERFACE ROW DATA INPUT REGISTER
Register address
KEYIFROW 0x7E00A00C
KEYIFROW
KEYIFROW
[31:8] -
Reserved
KEYPAD INTERFACE DEBOUNCING FILTER CLOCK DIVISION REGISTER
Register address
KEYIFFC 0x7E00A010
KEYIFFC
KEYIFFC
Reserved
Preliminary product information describe products that are in development,
40-10
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
R/W
R KEYPAD interface row data input register
Bit
KEYPAD interface row data input register (read only)
[7:0]
This register values from input ports are not filtered data.
R/W
R/W KEYPAD
division register
Bit
KEYPAD interface debouncing filter clock division register.
[9:0]
User can set compare value for 10-bit up-counter.
This register value means when FC_EN bit is HIGH.
FCLK = FLT_CLK / (KEYIFFC[9:0] + 1)
( FLT_CLK is RTCCLK(32Khz) or OSC_IN (10 ~ 12Mhz) )
[31:10] -
S3C6400X III RISC MICROPROCESSOR
Description
Description
Description
interface debouncing
Description
Reset Value
Reflects input ports
Reset Value
filter clock 0x0